import { ComboBox, HorizontalBox, VerticalBox } from "std-widgets.slint";
import { LineEdit, Switch } from "controls.slint";
import { FocusVisibleScope } from "focus-visible-scope.slint";
import { TypeScale } from "../typography.slint";
import { SidebarStyle } from "sidebar-row.slint";
import { KbdShortcut, KeyboardKeys } from "kbd.slint";

// Settings navigation is intentionally separate from MailSidebar: the latter
// owns mailbox models, compose actions, and tree expansion state.
export component SettingsNavItem inherits Rectangle {
    in property <string> text;
    in property <image> icon;
    in property <bool> selected: false;
    in property <color> accent;
    in property <color> accent-soft;
    in property <color> body-text;
    in property <color> muted-text;
    in property <color> icon-color: root.selected ? root.accent : root.muted-text;
    callback clicked;

    height: 36px;
    border-radius: 7px;
    background: root.selected ? root.accent-soft : nav-hit.has-hover ? root.accent-soft : transparent;

    Image {
        x: 10px;
        y: (parent.height - self.height) / 2;
        width: SidebarStyle.icon-size;
        height: SidebarStyle.icon-size;
        source: root.icon;
        colorize: root.icon-color;
        image-fit: contain;
        accessible-role: none;
    }
    Text {
        x: 37px;
        width: parent.width - 47px;
        height: parent.height;
        text: root.text;
        color: root.body-text;
        font-size: SidebarStyle.label-size;
        font-weight: root.selected ? SidebarStyle.selected-weight : SidebarStyle.normal-weight;
        vertical-alignment: center;
        overflow: elide;
    }
    nav-hit := TouchArea {
        accessible-role: button;
        accessible-label: root.text;
        accessible-checked: root.selected;
        accessible-action-default => { root.clicked(); }
        clicked => { root.clicked(); }
        mouse-cursor: pointer;
    }
}

export component SettingsCard inherits Rectangle {
    in property <string> title;
    in property <string> description;
    in property <color> surface;
    in property <color> card-border-color;
    in property <color> heading;
    in property <color> secondary-text;
    // Where content placed below the header starts. Larger platform fonts
    // make the header taller than its 58px design, so callers offset from it.
    out property <length> content-y: description-text.y + description-text.height;

    background: root.surface;
    border-radius: 10px;
    border-width: 1px;
    border-color: root.card-border-color;

    title-text := Text {
        x: 20px;
        y: 17px;
        width: parent.width - 40px;
        height: max(20px, self.preferred-height);
        text: root.title;
        color: root.heading;
        font-size: TypeScale.subtitle;
        font-weight: 600;
        letter-spacing: -0.3px;
        vertical-alignment: center;
        overflow: elide;
    }
    description-text := Text {
        x: 20px;
        y: title-text.y + title-text.height + 4px;
        width: parent.width - 40px;
        height: max(17px, self.preferred-height);
        text: root.description;
        color: root.secondary-text;
        font-size: TypeScale.caption;
        vertical-alignment: center;
        overflow: elide;
    }
}

// Shared preference row for boolean appearance and behavior settings. Keeping
// the label, description, touch target, and spacing here prevents individual
// settings cards from slowly drifting apart.
export component SettingsSwitchRow inherits Rectangle {
    in property <bool> compact: false;
    in property <length> compact-title-height: 17px;
    in property <length> compact-description-height: 34px;
    in property <length> desktop-height: 48px;
    in property <string> title;
    in property <string> description;
    in property <bool> checked: false;
    in property <bool> enabled: true;
    in property <color> title-color;
    in property <color> description-color;
    callback toggled(bool);

    // Both texts grow past their designed heights with larger platform fonts.
    height: root.compact
        ? 27px + title-text.height + description-text.height
        : root.desktop-height + title-text.height + description-text.height - 34px;
    opacity: root.enabled ? 1 : 0.5;

    HorizontalBox {
        spacing: 16px;
        VerticalBox {
            horizontal-stretch: 1;
            min-width: 0px;
            spacing: 2px;
            title-text := Text {
                height: max(root.compact ? root.compact-title-height : 17px, self.preferred-height);
                text: root.title;
                color: root.title-color;
                font-size: TypeScale.body;
                font-weight: 600;
                wrap: root.compact ? word-wrap : no-wrap;
                overflow: root.compact ? clip : elide;
            }
            description-text := Text {
                height: max(root.compact ? root.compact-description-height : 17px, self.preferred-height);
                text: root.description;
                color: root.description-color;
                font-size: TypeScale.caption;
                wrap: word-wrap;
            }
        }
        Switch {
            checked: root.checked;
            enabled: root.enabled;
            control-label: root.title;
            toggled => { root.toggled(self.checked); }
        }
    }
}

// A small app-level wrapper keeps select geometry consistent while retaining
// the platform widget's keyboard navigation, popup behavior, and accessibility.
export component SettingsSelect inherits ComboBox {
    in property <[string]> choices;
    in-out property <int> selected-index: 0;
    callback selection-changed(int, string);

    model: root.choices;
    current-index <=> root.selected-index;
    height: 36px;
    min-width: 180px;

    selected(value) => {
        root.selection-changed(root.selected-index, value);
    }
}

export component SettingsSelectRow inherits Rectangle {
    in property <bool> compact: false;
    in property <length> compact-description-height: 34px;
    in property <string> title;
    in property <string> description;
    in property <[string]> choices;
    in-out property <int> selected-index: 0;
    in property <color> title-color;
    in property <color> description-color;
    callback selected(int, string);

    // Desktop: the texts overhang the box padding by design. Compact: two 8px
    // insets, two 7px gaps and the 36px selector around the stacked texts.
    // Both layouts stay instantiated so the row can measure its texts.
    height: root.compact
        ? 66px + compact-title.height + compact-description.height
        : 23px + desktop-title.height + desktop-description.height;
    vertical-stretch: 0;

    HorizontalBox {
        visible: !root.compact;
        spacing: 20px;
        VerticalBox {
            spacing: 2px;
            desktop-title := Text {
                height: max(18px, self.preferred-height);
                text: root.title;
                color: root.title-color;
                font-size: TypeScale.body;
                font-weight: 600;
                overflow: elide;
            }
            desktop-description := Text {
                height: max(17px, self.preferred-height);
                text: root.description;
                color: root.description-color;
                font-size: TypeScale.caption;
                overflow: elide;
            }
        }
        Rectangle { horizontal-stretch: 1; }
        SettingsSelect {
            width: 210px;
            choices: root.choices;
            selected-index <=> root.selected-index;
            selection-changed(index, value) => { root.selected(index, value); }
        }
    }

    VerticalBox {
        visible: root.compact;
        padding: 8px;
        spacing: 7px;
        compact-title := Text {
            height: max(20px, self.preferred-height);
            text: root.title;
            color: root.title-color;
            font-size: TypeScale.body;
            font-weight: 600;
            wrap: word-wrap;
        }
        compact-description := Text {
            height: max(root.compact-description-height, self.preferred-height);
            text: root.description;
            color: root.description-color;
            font-size: TypeScale.caption;
            wrap: word-wrap;
        }
        SettingsSelect {
            horizontal-stretch: 1;
            choices: root.choices;
            selected-index <=> root.selected-index;
            selection-changed(index, value) => { root.selected(index, value); }
        }
    }
}

export component SettingsLinkRow inherits Rectangle {
    in property <string> text;
    in property <string> description;
    in property <image> icon;
    in property <bool> colorize-icon: true;
    in property <color> accent;
    in property <color> body-text;
    in property <color> muted-text;
    in property <color> hover-background;
    out property <bool> focus-visible: keyboard.focus-visible;
    callback clicked;

    height: 18px + link-title.height + link-description.height;
    border-radius: 7px;
    forward-focus: keyboard;
    border-width: keyboard.focus-visible ? 2px : 0px;
    border-color: root.accent;
    background: link-hit.has-hover ? root.hover-background : transparent;
    accessible-role: button;
    accessible-label: root.text;
    accessible-description: root.description;
    accessible-action-default => { root.clicked(); }

    Image {
        x: 10px;
        y: (parent.height - self.height) / 2;
        width: 18px;
        height: 18px;
        source: root.icon;
        colorize: root.colorize-icon ? root.accent : transparent;
        image-fit: contain;
        accessible-role: none;
    }
    VerticalBox {
        x: 40px;
        y: 7px;
        width: parent.width - 80px;
        height: parent.height - 14px;
        spacing: 1px;
        link-title := Text { height: max(18px, self.preferred-height); text: root.text; color: root.body-text; font-size: TypeScale.body; font-weight: 600; overflow: elide; }
        link-description := Text { height: max(16px, self.preferred-height); text: root.description; color: root.muted-text; font-size: TypeScale.caption; overflow: elide; }
    }
    Image {
        x: parent.width - 27px;
        y: (parent.height - self.height) / 2;
        width: 16px;
        height: 16px;
        source: @image-url("../icons/lucide/outline/external-link.svg");
        colorize: root.accent;
        image-fit: contain;
        accessible-role: none;
    }
    keyboard := FocusVisibleScope {
        accessible-role: none;
        key-pressed(event) => {
            if event.text == Key.Return || event.text == Key.Space { root.clicked(); return accept; }
            reject
        }
    }
    link-hit := TouchArea {
        clicked => { keyboard.focus(); keyboard.pointer-activated(); root.clicked(); }
        mouse-cursor: pointer;
    }
}

// A card of shortcut rows under a small heading.
export component ShortcutSection inherits Rectangle {
    in property <string> title;
    in property <color> surface;
    in property <color> card-border-color;
    in property <color> heading;

    background: root.surface;
    border-radius: 8px;
    border-width: 1px;
    border-color: root.card-border-color;
    VerticalBox {
        padding-top: 12px;
        padding-right: 18px;
        padding-bottom: 12px;
        padding-left: 18px;
        spacing: 0px;
        Text {
            height: max(20px, self.preferred-height);
            text: root.title;
            color: root.heading;
            font-size: TypeScale.caption;
            font-weight: 700;
            vertical-alignment: center;
        }
        @children
    }
}

// One shortcut with its keys; a second binding is shown as an alternative.
export component ShortcutRow inherits Rectangle {
    in property <string> title;
    in property <[keys]> keys;
    in property <string> separator: @tr("or");
    in property <color> title-color;
    in property <color> separator-color;

    height: max(40px, keys-row.preferred-height + 12px);
    accessible-role: text;
    accessible-label: @tr("{}, {}", root.title, root.keys.length > 1
        ? KeyboardKeys.text(root.keys[0]) + " " + root.separator + " " + KeyboardKeys.text(root.keys[1])
        : KeyboardKeys.text(root.keys[0]));

    HorizontalLayout {
        spacing: 16px;
        Text {
            horizontal-stretch: 1;
            text: root.title;
            color: root.title-color;
            font-size: TypeScale.body;
            vertical-alignment: center;
            overflow: elide;
            accessible-role: none;
        }
        keys-row := HorizontalLayout {
            spacing: 6px;
            alignment: end;
            cross-axis-alignment: center;
            for binding[index] in root.keys : HorizontalLayout {
                spacing: 6px;
                cross-axis-alignment: center;
                if index > 0 : Text {
                    text: root.separator;
                    color: root.separator-color;
                    font-size: TypeScale.caption;
                    vertical-alignment: center;
                    accessible-role: none;
                }
                KbdShortcut { keys: binding; }
            }
        }
    }
}

export component FormField inherits VerticalBox {
    in property <bool> enabled: true;
    in property <string> label;
    // Bind with `<=>`: typing replaces a one-way binding, after which the
    // field would keep showing its old text when the form is reset or filled.
    in-out property <string> value;
    in property <string> placeholder;
    in property <InputType> input-type: InputType.text;
    in property <color> label-color;
    callback edited(string);
    forward-focus: field;

    padding: 0px;
    spacing: 5px;
    // Long translated labels wrap on narrow screens instead of overflowing.
    Text {
        height: max(16px, self.preferred-height);
        text: root.label;
        color: root.label-color;
        font-size: TypeScale.caption;
        font-weight: 600;
        vertical-alignment: center;
        wrap: word-wrap;
    }
    field := LineEdit {
        enabled: root.enabled;
        height: 36px;
        text <=> root.value;
        placeholder-text: root.placeholder;
        input-type: root.input-type;
        edited(value) => { root.edited(value); }
    }
}